#include<stdio.h>
int critic(void);
int main()
{
    int units;
    printf("How many pounds to a firkin of butter?\n");
    scanf("%d", &units);
    while(units != 56)
        units=critic();
    printf("You must have looked it up!\n");

    return 0;
}

int critic(void)
{
    int units;
    printf("No luck, my friends. Try again.\n");
    scanf("%d", &units);

    return units;
}